LONG WATER PUMP SHAFT ONLY

This longer shaft is to take up the shaft end play caused by wear in the head. Install the impeller 8 29/64 or 8.455 from the fan end. Assemble pump and install on head without a gasket for now. If pump flange does not touch the head, measure the gap, remove the pump and grind the end of the shaft by the amount of the gap. Fit shaft again then grind, until the pump seats against head. Remove one more time and add the gasket. The gasket should be .006 to .010 when compressed to give you the correct end play with impeller installed. Excessive end play disturbs lead packing seal. See (12480 for impeller mounted & pinned to this shaft.)